Minor formatting

src/io/calimero/server/Launcher.java

@@ -748,7 +748,7 @@ private void setupContainers(final List<Container> containers) {
 			final var tunnelingUsers = container.tunnelingUsers();
 			if (!tunnelingUsers.isEmpty()) {
 				final var serverAddress = useServerAddress ? sc.getMediumSettings().getDeviceAddress() : null;
-				setTunnelingUsers(ios, objectInstance, tunnelingUsers, additionalAddresses, serverAddress);
+				setTunnelingUsers(objectInstance, tunnelingUsers, additionalAddresses, serverAddress);
 			}
 			else {
 				// list all additional addresses as tunneling addresses
@@ -953,14 +953,15 @@ private void setAdditionalIndividualAddresses(final InterfaceObjectServer ios, f
 	private static final int pidTunnelingAddresses = 79;
 	private static final int pidTunnelingUsers = 97;
 
-	private void setTunnelingUsers(final InterfaceObjectServer ios, final int objectInstance,
+	private void setTunnelingUsers(final int objectInstance,
 		final Map<Integer, List<IndividualAddress>> userToAddresses, final List<IndividualAddress> additionalAddresses,
 		final IndividualAddress ctrlEndpoint) {
 
 		// address indices are sorted in natural order
 		final var addrIndices = userToAddresses.values().stream().flatMap(List::stream)
 				.map(addr -> addressIndex(addr, additionalAddresses, ctrlEndpoint)).sorted().distinct()
 				.collect(ByteArrayOutputStream::new, ByteArrayOutputStream::write, (r1, r2) -> {}).toByteArray();
+		final var ios = server.getInterfaceObjectServer();
 		setTunnelingAddresses(ios, objectInstance, addrIndices);
 
 		// tunneling user entries are sorted first by user <, then by tunneling addr idx <

src/io/calimero/server/knxnetip/DataEndpoint.java

@@ -67,7 +67,6 @@
 import io.calimero.KNXTimeoutException;
 import io.calimero.KnxRuntimeException;
 import io.calimero.ReturnCode;
-import io.calimero.ServiceType;
 import io.calimero.baos.BaosService;
 import io.calimero.cemi.CEMI;
 import io.calimero.cemi.CEMIBusMon;
@@ -499,7 +498,7 @@ private void respondToFeature(final EndpointAddress src, final KNXnetIPHeader h,
 		logger.log(DEBUG, "respond with {0}", res);
 
 		final var dst = etsDstHack(dataEndpt, src);
-		send(PacketHelper.toPacket(new ServiceRequest<ServiceType>(res.type(), channelId, getSeqSend(), res)), dst);
+		send(PacketHelper.toPacket(new ServiceRequest<>(res.type(), channelId, getSeqSend(), res)), dst);
 	}
 
 	private TunnelingFeature responseForFeature(final KNXnetIPHeader h, final ByteBuffer buffer) throws KNXFormatException {

src/io/calimero/server/knxnetip/DiscoveryService.java

@@ -86,6 +86,7 @@ final class DiscoveryService extends ServiceLooper
 		s = createSocket(joinOn);
 	}
 
+	@SuppressWarnings("resource")
 	private MulticastSocket createSocket(final NetworkInterface[] joinOn)
 	{
 		final String p = System.getProperties().getProperty("java.net.preferIPv4Stack");

test/io/calimero/server/gateway/KnxServerGatewayTest.java

@@ -234,7 +234,7 @@ static class DummyLink implements KNXNetworkLink
 		private final EventListeners<NetworkLinkListener> listeners = new EventListeners<>();
 
 		// has to be public for creation by subnet connector
-		public DummyLink(final Object[] s) {}
+		public DummyLink(@SuppressWarnings("unused") final Object[] __) {}
 
 		@Override
 		public void addLinkListener(final NetworkLinkListener l)